4CET wrote:

An unqualified acquaintance insisted that it is necessary, I thought

Generally there is lots of confusion (even among pros) in this area.

not. In fact it seemed to me that earthing isolated metalwork and
bringing it in to the system might even make things more dangerous.

Well as the article points out, there is fundamental difference between
earthing and bonding - they both improve the safety, but do it in
different ways.

Any opinons out there on that one?

The danger would come if you earthed some things but failed to provide
it for others that require it.

If that were the case, then you would be relying on the equipotential
bonding and any RCDs present to protect you in the event of a fault.
(one to limit the maximum voltage you could be exposed to, and the other
to disconnect the power).


--
Cheers,

John.

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